86224529 has 2 divisors, whose sum is σ = 86224530. Its totient is φ = 86224528.

The previous prime is 86224519. The next prime is 86224531. The reversal of 86224529 is 92542268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68145025 + 18079504 = 8255^2 + 4252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86224529 is a prime.

It is a Sophie Germain prime.

Together with 86224531, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 86224492 and 86224501.

It is not a weakly prime, because it can be changed into another prime (86224519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43112264 + 43112265.

It is an arithmetic number, because the mean of its divisors is an integer number (43112265).

Almost surely, 2^86224529 is an apocalyptic number.

It is an amenable number.

86224529 is a deficient number, since it is larger than the sum of its proper divisors (1).

86224529 is an equidigital number, since it uses as much as digits as its factorization.

86224529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 38.

The square root of 86224529 is about 9285.7163967031. The cubic root of 86224529 is about 441.7842989075.

The spelling of 86224529 in words is "eighty-six million, two hundred twenty-four thousand, five hundred twenty-nine".